From: Ralph Campbell Date: Fri, 22 Sep 2006 22:22:24 +0000 (-0700) Subject: IB/uverbs: Allow resize CQ operation to return driver-specific data X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=64f817ba98095156149ba5991592d5d039f6da74;p=linux-beck.git IB/uverbs: Allow resize CQ operation to return driver-specific data Add a ib_uverbs_resize_cq_resp.driver_data field so that low-level drivers can return data from a resize CQ operation to userspace. Have ib_uverbs_resize_cq() only copy the cqe field, to avoid having to bump the userspace ABI. Signed-off-by: Ralph Campbell Signed-off-by: Roland Dreier --- diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index 8b6df7cec0bf..deae43f31e79 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -879,11 +879,10 @@ ssize_t ib_uverbs_resize_cq(struct ib_uverbs_file *file, if (ret) goto out; - memset(&resp, 0, sizeof resp); resp.cqe = cq->cqe; if (copy_to_user((void __user *) (unsigned long) cmd.response, - &resp, sizeof resp)) + &resp, sizeof resp.cqe)) ret = -EFAULT; out: diff --git a/include/rdma/ib_user_verbs.h b/include/rdma/ib_user_verbs.h index 7b5372010f4b..db1b814b62cc 100644 --- a/include/rdma/ib_user_verbs.h +++ b/include/rdma/ib_user_verbs.h @@ -275,6 +275,8 @@ struct ib_uverbs_resize_cq { struct ib_uverbs_resize_cq_resp { __u32 cqe; + __u32 reserved; + __u64 driver_data[0]; }; struct ib_uverbs_poll_cq {